(a) This object while rotating at two positions 180° and 360° it looks exactly the same. Therefore it has a rotational symmetry of order 2.
fig a has order 2
(b) This object in full turn, these are two positions 180° and 360° it looks exactly the same. Therefore it has a rotational symmetry of order 2.
fig b has order 2
(c) This object while rotating there are three positions 120° and 240° and 360° the object looks exactly the same. Therefore it has a rotational symmetry of order 3. fig c has order 3
(d) In full turn this object will rotate and three are four positions such as 90°, 180° 270° and 360° the figure looks exactly the same. Therefore it has a rotational symmetry of order 4.
(e) In a full turn this object will rotate and there are four positions such as 90°, 180° 270° and 360°, the figure looks exactly the same. Therefore it has a rotational symmetry of order 4.
fig e has order 4
(f) The figure is a regular pentagon. In a full turn are five positions at 72°, 144°, 216°, 288°, and 360° the figure looks exactly the same. Therefore it has a rotational symmetry of order 5.
fig f has order 5
(g) In a full turn there are 6 positions. i.e., 60°, 120°, 180°, 240°, 300° and 360° the figure looks exactly the same. Therefore it has a rotational symmetry of order 6.
fig g has order 6
(h) This figure while rotating there are 3 positions the figure looks exactly the same at 120°, 240° and 360°. Therefore it has a rotational symmetry of order 3.
fig h has order 3